Hydraulic and earth engineering – Earth treatment or control – Chemical
Patent
1988-03-02
1989-08-22
Taylor, Dennis L.
Hydraulic and earth engineering
Earth treatment or control
Chemical
405263, 405267, E02D 312
Patent
active
048591190
ABSTRACT:
A grouting rod is formed with a first channel, a second channel (or channels) surrounding the first channel and a third channel which is normally in communication with the first channel. A piston valve is vertically movably received in an upper portion of the third channel. When the piston valve is raised, upper lateral communication holes and upper discharge holes which are formed in the upper peripheral wall of the third channel are closed by the piston valve and concurrently the second channels are permitted to communicate with a lower portion of the third channel through lower lateral communication holes also formed in the upper peripheral wall of the third channel. When the piston valve is lowered, the upper lateral communication holes and upper discharge holes are opened and concurrently the second channel(or channels) is prevented from communicating with the lower portion of the third channel through the lower lateral communication holes.
REFERENCES:
patent: 4302132 (1981-11-01), Ogana et al.
patent: 4449856 (1984-05-01), Tokora et al.
patent: 4624606 (1986-11-01), Nakanishi et al.
patent: 4725169 (1988-02-01), Tazawa et al.
Chida Shouhei
Miyazaki Yasuo
Sato Yasunori
Yamaoto Naoki
Chida Shouhei
Kashiyama Kogyo Co. Ltd.
Nittoc Constructions Co., Ltd.
Osaka Bousui Constructions Co., Ltd.
Taylor Dennis L.
LandOfFree
Liquid chemical grouting apparatus and valve switching arrangeme does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Liquid chemical grouting apparatus and valve switching arrangeme, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Liquid chemical grouting apparatus and valve switching arrangeme will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2415408